Comey was extremely professional, calm, cool and collected the entire time. Even spiced it up with appropriate amounts of humor, self-deprecating or otherwise. I watched the full 3+ hour testimony over the course of work today and I'm really pleased with how it went. A lot of stuff got covered, and while it's not some sort of damning evidence to obstruction of justice, it was never intended to be. Anyone trying to hype that up didn't know what they were talking about.
It's definitely *possible*, but that would need to be determined by the committee. What I wouldn't give to see that closed session, though...